Okay, I'd given him the benefit of the doubt before with his blunt advice but he's just a raging cunt who get off to other people's misery.
Now, the question is, why the fuck he doesn't get fired if even the fucking chief knows he's doing it on purpose? It's not something he just does to newcomers, but apparently also established mangaka. What is the point of having such a disruptive person in your workplace? He's not even doing it secretly so he can get his jollies while presenting a facade of super professionalism, EVERYONE KNOWS WHAT HE'S DOING.
If all that was needed to destroy Tadokoro's mental state just make it a few shitposters online shitting on her art, it would even highlight how fragile her mentality is by having a few mean comments online breaking her. This is just forced drama, and only so that Nikaidou can get revenge on the guy or whatever, but when it's this shoehorned and obvious then it just feels meh.